【摘 要】
：
采用压制成型工艺研究改性材料对生土基砌块吸湿性能和导热系数的影响,采用动态实验法对其吸湿性能进行测试、稳态平板法对其导热性能进行测试,研究结果表明:当湿度为60HR时,掺量均为15％的水泥和石灰的生土砌块含湿量分别为1.7％和1.9％,掺量为1％的改性纤维的生土砌块的吸湿率达到2.8％,主要因为掺入纤维增加了生土砌块的孔隙率,而水泥水化产生的水化产物和石灰中的Ca(OH)2与活性矿物反应生成的胶凝
【机 构】
：
天津城建大学材料科学与工程学院,天津300384
论文部分内容阅读
采用压制成型工艺研究改性材料对生土基砌块吸湿性能和导热系数的影响,采用动态实验法对其吸湿性能进行测试、稳态平板法对其导热性能进行测试,研究结果表明:当湿度为60HR时,掺量均为15％的水泥和石灰的生土砌块含湿量分别为1.7％和1.9％,掺量为1％的改性纤维的生土砌块的吸湿率达到2.8％,主要因为掺入纤维增加了生土砌块的孔隙率,而水泥水化产生的水化产物和石灰中的Ca(OH)2与活性矿物反应生成的胶凝物质均降低了生土砌块的孔隙率.水泥掺量从5％增加到15％时,改性生土砌块的导热系数从0.457提高到0.478,主要因为水泥掺量增加时,水泥水化产生的水化产物增多,降低了孔隙率,增大了砌块的导热系数;石灰掺量从5％增加到15％时,改性生土砌块的导热系数从0.439降低到0.428,主要因为掺入石灰降低生土砌块的密度,同时降低了砌块的导热系数;复掺改性纤维掺量从0.5％增加到1.5％时,改性生土基砌块的导热系数从0.443降低到0.399,主要因为纤维的掺入降低了生土砌块的孔隙率,从而增大了导热系数.
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